Placement Papers - Celstream

Hi All, I attended the Celstream Interview recently and here I am going to share with you my experience. First round is a written test, it consists of 3 sections. Quantitative, Reasoning, C Programming are Difficulty level is average.

First Technical Round (40 minutes):

1. Linkedlist program for student records.
2. Reverse of a String.
3. Explanation of Overloading and Overriding with examples in C++.
4. Virtual table and how it is useful.
5. Long discussion on a project which I have done in my final year.

Second Round Managerial (30 minutes):

1. Discussion on a project which I have done in my final year.
2. Threads, Mutex, Semaphore, Synchronization.

Third Technical Round (45 hours and Bit tough):

1. Difference between Windows and Linux, and which scheduling algorithms are used in each?
2. How does Privately extending a class, Publicly extending a class, and protectedly extending a class work in C++?
3. Storage classes in C?
4. Int a=10, p=& a;
- Difference between (&*p) and (*& p) and what it prints?
- How to store a in heap memory (not answered)?
5. Types of Scheduling algorithms?
6. Multithreading and how it works/useful?
7. Virtual destructors?
8. Virtual keyword. The diamond problem in C++?
9. All OOPS concepts (one should be good in this)?

I hope this may help you. Very all the best.